Article ID: 931859
Article Last Modified on 2/16/2007
APPLIES TO
- Microsoft Windows XP Professional
- Microsoft Windows XP Home Edition
INTRODUCTION
This article describes the address prefix change for the Teredo address format in Microsoft Windows XP.
MORE INFORMATION
Internet Assigned Numbers Authority (IANA) has allocated a new 2001:0000::/32 address prefix as part of the standardization of the Teredo address format in Request for Comments (RFC) 4380, "Teredo: Tunneling IPv6 over UDP through Network Address Translations (NATs)." The original 3ffe:831f::/32 address prefix is being deprecated. The 3ffe:831f::/32 address prefix is used in Microsoft Windows XP.
Windows XP Service Pack 2 (SP2)-based computers that are IPv6-capable hosts require the new address prefix to connect to Windows Vista-based computers over Teredo. The Teredo address prefix change is being deployed on all Windows XP SP2-based computers as part of the IPv6 security update.
The new Teredo address prefix is deployed together with the IPv6 security update as part of a broader IPv6 initiative. For more information about the IPv6 security update, visit the following Microsoft Web site:
For more information about Teredo, visit the following Microsoft Web site:
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
922482 A computer that is running Microsoft Windows XP may not recognize the new Teredo address format
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